// Created: 17/09/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+/*
+ * Colour map
+ *
+ * When constructed with the default constructor, we start from
+ * the wxApp::GetMainColormap, allocating additional read-only cells
+ * in Create(). The cells are freed on the next call to Create()
+ * or when the destructor is called.
+ */
+
+/* Wolfram Gloger <u7y22ab@sunmail.lrz-muenchen.de>
+I have implemented basic colormap support for the X11 versions of
+wxWindows, notably wxPalette::Create(). The way I did it is to
+allocate additional read-only color cells in the default colormap. In
+general you will get arbitrary pixel values assigned to these new
+cells and therefore I added a method wxColourMap::TransferBitmap()
+which maps the pixel values 0..n to the real ones obtained with
+Create(). This is only implemented for the popular case of 8-bit
+depth.
+
+Allocating read-write color cells would involve installing a private
+X11 colormap for a particular window, and AFAIK this is not
+recommended; only the window manager should do this... Also, it is
+not the functionality that wxPalette::Create() aims to provide.
+ */
+
#ifdef __GNUG__
#pragma implementation "palette.h"
#endif
#include "wx/palette.h"
+#include "wx/window.h"
+#include "wx/app.h"
+#include "wx/utils.h"
+
+#include <Xm/Xm.h>
+#include "wx/motif/private.h"
#if !USE_SHARED_LIBRARIES
IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject)
+IMPLEMENT_DYNAMIC_CLASS(wxXPalette, wxObject)
#endif
/*
- * Palette
- *
- */
+* Palette
+*
+*/
+
+wxXPalette::wxXPalette()
+{
+ m_cmap = (WXColormap) 0;
+ m_pix_array_n = 0;
+ m_pix_array = (unsigned long*) 0;
+ m_display = (WXDisplay*) 0;
+ m_destroyable = FALSE;
+}
wxPaletteRefData::wxPaletteRefData()
{
- m_colormap = (WXColormap) 0;
}
wxPaletteRefData::~wxPaletteRefData()
{
- // TODO
+ Display *display = (Display*) NULL;
+
+ wxNode *node, *next;
+
+ for (node = m_palettes.First(); node; node = next) {
+ wxXPalette *c = (wxXPalette *)node->Data();
+ unsigned long *pix_array = c->m_pix_array;
+ Colormap cmap = (Colormap) c->m_cmap;
+ bool destroyable = c->m_destroyable;
+ int pix_array_n = c->m_pix_array_n;
+ display = (Display*) c->m_display;
+
+ if (pix_array_n > 0)
+ {
+ // XFreeColors(display, cmap, pix_array, pix_array_n, 0);
+ // Be careful not to free '0' pixels...
+ int i, j;
+ for(i=j=0; i<pix_array_n; i=j) {
+ while(j<pix_array_n && pix_array[j]!=0) j++;
+ if(j > i) XFreeColors(display, cmap, &pix_array[i], j-i, 0);
+ while(j<pix_array_n && pix_array[j]==0) j++;
+ }
+ delete [] pix_array;
+ }
+
+ if (destroyable)
+ XFreeColormap(display, cmap);
+
+ next = node->Next();
+ m_palettes.DeleteNode(node);
+ delete c;
+ }
}
wxPalette::wxPalette()
bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
{
- UnRef();
+ UnRef();
+
+ if (!n) {
+ return FALSE;
+ }
+
+ m_refData = new wxPaletteRefData;
- m_refData = new wxPaletteRefData;
+ XColor xcol;
+ Display* display = (Display*) wxGetDisplay();
- // TODO
+ unsigned long *pix_array;
+ Colormap cmap;
+ int pix_array_n;
- return FALSE;
+ cmap = (Colormap) wxTheApp->GetMainColormap(display);
+
+ pix_array = new unsigned long[n];
+ if (!pix_array)
+ return FALSE;
+
+ pix_array_n = n;
+ xcol.flags = DoRed | DoGreen | DoBlue;
+ for(int i = 0; i < n; i++) {
+ xcol.red = (unsigned short)red[i] << 8;
+ xcol.green = (unsigned short)green[i] << 8;
+ xcol.blue = (unsigned short)blue[i] << 8;
+ pix_array[i] = (XAllocColor(display, cmap, &xcol) == 0) ? 0 : xcol.pixel;
+ }
+
+ wxXPalette *c = new wxXPalette;
+
+ c->m_pix_array_n = pix_array_n;
+ c->m_pix_array = pix_array;
+ c->m_cmap = (WXColormap) cmap;
+ c->m_display = (WXDisplay*) display;
+ c->m_destroyable = FALSE;
+ M_PALETTEDATA->m_palettes.Append(c);
+
+ return TRUE;
}
int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const
{
if ( !m_refData )
- return FALSE;
+ return FALSE;
// TODO
return FALSE;
bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const
{
if ( !m_refData )
- return FALSE;
+ return FALSE;
if (index < 0 || index > 255)
return FALSE;
return FALSE;
}
+WXColormap wxPalette::GetXColormap(WXDisplay* display) const
+{
+ if (!M_PALETTEDATA || (M_PALETTEDATA->m_palettes.Number() == 0))
+ return wxTheApp->GetMainColormap(display);
+
+ wxNode* node = M_PALETTEDATA->m_palettes.First();
+ if (!display && node)
+ {
+ wxXPalette* p = (wxXPalette*) node->Data();
+ return p->m_cmap;
+ }
+ while (node)
+ {
+ wxXPalette* p = (wxXPalette*) node->Data();
+ if (p->m_display == display)
+ return p->m_cmap;
+
+ node = node->Next();
+ }
+
+ /* Make a new one: */
+ wxXPalette *c = new wxXPalette;
+ wxXPalette *first = (wxXPalette *)M_PALETTEDATA->m_palettes.First()->Data();
+ XColor xcol;
+ int pix_array_n = first->m_pix_array_n;
+
+ c->m_pix_array_n = pix_array_n;
+ c->m_pix_array = new unsigned long[pix_array_n];
+ c->m_display = display;
+ c->m_cmap = wxTheApp->GetMainColormap(display);
+ c->m_destroyable = FALSE;
+
+ xcol.flags = DoRed | DoGreen | DoBlue;
+ int i;
+ for (i = 0; i < pix_array_n; i++)
+ {
+ xcol.pixel = first->m_pix_array[i];
+ XQueryColor((Display*) first->m_display, (Colormap) first->m_cmap, &xcol);
+ c->m_pix_array[i] =
+ (XAllocColor((Display*) display, (Colormap) c->m_cmap, &xcol) == 0) ? 0 : xcol.pixel;
+ }
+
+ // wxPalette* nonConstThis = (wxPalette*) this;
+
+ M_PALETTEDATA->m_palettes.Append(c);
+
+ return c->m_cmap;
+}
+
+bool wxPalette::TransferBitmap(void *data, int depth, int size)
+{
+ switch(depth) {
+ case 8:
+ {
+ unsigned char *uptr = (unsigned char *)data;
+ int pix_array_n;
+ unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n);
+ while(size-- > 0)
+ {
+ if((int)*uptr < pix_array_n)
+ *uptr = (unsigned char)pix_array[*uptr];
+ uptr++;
+ }
+
+ return TRUE;
+ }
+ default:
+ return FALSE;
+ }
+}
+
+bool wxPalette::TransferBitmap8(unsigned char *data, unsigned long sz,
+ void *dest, unsigned int bpp)
+{
+ int pix_array_n;
+ unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n);
+ switch(bpp) {
+ case 8: {
+ unsigned char *dptr = (unsigned char *)dest;
+ while(sz-- > 0) {
+ if((int)*data < pix_array_n)
+ *dptr = (unsigned char)pix_array[*data];
+ data++;
+ dptr++;
+ }
+ break;
+ }
+ case 16: {
+ unsigned short *dptr = (unsigned short *)dest;
+ while(sz-- > 0) {
+ if((int)*data < pix_array_n)
+ *dptr = (unsigned short)pix_array[*data];
+ data++;
+ dptr++;
+ }
+ break;
+ }
+ case 24: {
+ struct rgb24 { unsigned char r, g, b; } *dptr = (struct rgb24 *)dest;
+ while(sz-- > 0) {
+ if((int)*data < pix_array_n) {
+ dptr->r = pix_array[*data] & 0xFF;
+ dptr->g = (pix_array[*data] >> 8) & 0xFF;
+ dptr->b = (pix_array[*data] >> 16) & 0xFF;
+ }
+ data++;
+ dptr++;
+ }
+ break;
+ }
+ case 32: {
+ unsigned long *dptr = (unsigned long *)dest;
+ while(sz-- > 0) {
+ if((int)*data < pix_array_n)
+ *dptr = pix_array[*data];
+ data++;
+ dptr++;
+ }
+ break;
+ }
+ default:
+ return FALSE;
+ }
+ return TRUE;
+}
+
+unsigned long *wxPalette::GetXPixArray(WXDisplay *display, int *n)
+{
+ if (!M_PALETTEDATA)
+ return (unsigned long*) 0;
+ wxNode *node;
+
+ for (node = M_PALETTEDATA->m_palettes.First(); node; node = node->Next())
+ {
+ wxXPalette *c = (wxXPalette *)node->Data();
+ if (c->m_display == display)
+ {
+ if (n)
+ *n = c->m_pix_array_n;
+ return c->m_pix_array;
+ }
+ }
+
+ /* Not found; call GetXColormap, which will create it, then this again */
+ if (GetXColormap(display))
+ return GetXPixArray(display, n);
+ else
+ return (unsigned long*) 0;
+}
+
+void wxPalette::PutXColormap(WXDisplay* display, WXColormap cm, bool dp)
+{
+ UnRef();
+
+ m_refData = new wxPaletteRefData;
+
+ wxXPalette *c = new wxXPalette;
+
+ c->m_pix_array_n = 0;
+ c->m_pix_array = (unsigned long*) NULL;
+ c->m_display = display;
+ c->m_cmap = cm;
+ c->m_destroyable = dp;
+
+ M_PALETTEDATA->m_palettes.Append(c);
+}
projects / wxWidgets.git / blobdiff